$ git clone -n https://src.fedoraproject.org/rpms/ocaml-sedlex.git /var/lib/mock/f38-build-side-42-init-devel-723309-27298/root/chroot_tmpdir/scmroot/ocaml-sedlex
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-723309-27298/root/chroot_tmpdir/scmroot/ocaml-sedlex'...
$ git fetch origin 3f5597c514c439d5491a2ab20ab3bf5e8c005856:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ocaml-sedlex
 * [new ref]         3f5597c514c439d5491a2ab20ab3bf5e8c005856 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3f5597c Bump release and rebuild